Taylor Lautner and Robert Pattinson

Taylor Lautner and Robert Pattinson
Ages: 17 and 23
Hail From:Grand Rapids, Michigan, and London
In 2009: The guys teamed up once again on the big screen for "Twilight Saga: New Moon," and their collective hotness and feud over Bella Swan broke box-office records. They kept their names in the gossip pages with constant speculation about their dating lives and had everyone asking the fundamental question: Team Edward or Team Jacob?

Why They'll Be Huge in 2010: Lautner can be seen next in "Valentine's Day" alongside former flame Taylor Swift, and he's all set to tackle the lead role in the "Max Steel" movie. Meanwhile, Pattinson will be seen in the romance "Remember Me." In June, the two heartthrobs will once again have girls swooning in "Twilight Saga: Eclipse."

Choice Quote: "I think Bella's little bit of treachery in the third one will be ... I think it's going to be a good scene," Pattinson said of "Eclipse," with Lautner adding, "My favorite scene in the entire series is the tent scene, where the three of us are together. And it's gonna be really fun. There's a lot of comedy in 'Eclipse.' "